121972354 has 8 divisors (see below), whose sum is σ = 209095488. Its totient is φ = 52273860.

The previous prime is 121972351. The next prime is 121972363. The reversal of 121972354 is 453279121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (121972351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4356142 + ... + 4356169.

It is an arithmetic number, because the mean of its divisors is an integer number (26136936).

Almost surely, 2^121972354 is an apocalyptic number.

121972354 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

121972354 is a deficient number, since it is larger than the sum of its proper divisors (87123134).

121972354 is an equidigital number, since it uses as much as digits as its factorization.

121972354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8712320.

The product of its digits is 15120, while the sum is 34.

The square root of 121972354 is about 11044.1094706635. The cubic root of 121972354 is about 495.9301003865.

The spelling of 121972354 in words is "one hundred twenty-one million, nine hundred seventy-two thousand, three hundred fifty-four".